Syntace X-Fix is a three-head Allen Key driver that snaps into a modified collar that retrofits all Syntace X-12 through axles. X-Fix can also be ordered with the Torx 25 head that fits may SRAM components. Syntace says that the X-Fix axle system is ligher in total than a conventional quick release type. 18 Euros including the conversion parts (USD TBD).